{ pkgs, lib, ... }:

{
  name = "fastnetmon-advanced";
  meta.maintainers = lib.teams.wdz.members;

  nodes = {
    bird = { ... }: {
      networking.firewall.allowedTCPPorts = [ 179 ];
      services.bird2 = {
        enable = true;
        config = ''
          router id 192.168.1.1;

          protocol bgp fnm {
            local 192.168.1.1 as 64513;
            neighbor 192.168.1.2 as 64514;
            multihop;
            ipv4 {
              import all;
              export none;
            };
          }
        '';
      };
    };
    fnm = { ... }: {
      networking.firewall.allowedTCPPorts = [ 179 ];
      services.fastnetmon-advanced = {
        enable = true;
        settings = {
          networks_list = [ "172.23.42.0/24" ];
          gobgp = true;
          gobgp_flow_spec_announces = true;
        };
        bgpPeers = {
          bird = {
            local_asn = 64514;
            remote_asn = 64513;
            local_address = "192.168.1.2";
            remote_address = "192.168.1.1";

            description = "Bird";
            ipv4_unicast = true;
            multihop = true;
            active = true;
          };
        };
      };
    };
  };

  testScript = { nodes, ... }: ''
    start_all()
    fnm.wait_for_unit("fastnetmon.service")
    bird.wait_for_unit("bird2.service")

    fnm.wait_until_succeeds('journalctl -eu fastnetmon.service | grep "BGP daemon restarted correctly"')
    fnm.wait_until_succeeds("journalctl -eu gobgp.service | grep BGP_FSM_OPENCONFIRM")
    bird.wait_until_succeeds("birdc show protocol fnm | grep Estab")
    fnm.wait_until_succeeds('journalctl -eu fastnetmon.service | grep "API server listening"')
    fnm.succeed("fcli set blackhole 172.23.42.123")
    bird.succeed("birdc show route | grep 172.23.42.123")
  '';
}